Sounds like Hard Drive is going bad or even the cpu fan might be bad and not cooling down the CPU properly:

Ok lets start by doing this first if possible:

1. Hit ctrl \ alt \ del on your keyboard to bring up your task manager.2. Select the processes tab and maximize the window.3. Hit Ctrl \ Prtscn on your keyboard then open up Microsoft Paint and then hit control v on your keyboard.4. Save file as a jpg or gif then paste in a response to us.

Also if you can download

5. Donwload a program called speedfan and open the program and when the noise starts check to see if any fans are slowing down !

This will tell us what is actually running in the backround for the most part and if your cpu is running hot to make your programs run slower!

Download Speedfan(The download link is in the first line of the second paragraph), and install it. Once it's installed, run the program and post here the information it shows. The information I want you to post is the stuff that is circled in the example picture I have attached.

You might need to have the fan checked or better try buying a laptop cooling pad and use that, have you tried blowing AIR with a AIR CAN around your fan and cpu to clear any dust? Your running very hot! Your running at 125.6 F